JP3658128B2 - Automatic performance device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic performance device, and more particularly to an automatic performance device having an editing function for adding crescendo or decrescendo to an arbitrary part of automatic performance data.
[0002]
[Prior art]
Conventionally, an automatic performance device that performs an automatic performance based on automatic performance data stored in an internal storage device such as a RAM (Ramdom Access Memory) provided integrally or separately with an electronic musical instrument such as an electronic keyboard or an electronic piano It has been known.
[0003]
In general, automatic performance data for automatically playing a certain piece of music is composed of automatic performance data Part 1 to Part 16 of 16 parts such as a rhythm part, a chord part, and a melody part as shown in FIG. Yes.
The automatic performance data Part 1 to Part 16 are, for example, note data including key numbers and velocity information for playing each part, timbre data including timbre numbers, volume data including volume values, and the like. Contains various information.
[0004]
Therefore, various kinds of information included in the automatic performance data Part 1 to Part 16 as described above are changed (edited) by operating an operation panel provided in the apparatus, and the tone of the desired part is edited. There are automatic performance devices having various editing functions.
[0005]
[Problems to be solved by the invention]
However, even if the conventional automatic performance apparatus has various editing functions as described above, the automatic performance of the crescendo for gradually increasing the intensity of the sound and the decrescendo for gradually decreasing the intensity of the sound. It was not possible to perform editing to be added later to any part of the data. That is, there has been no automatic performance apparatus having an editing function for adding a crescendo or decrescendo to an arbitrary part of automatic performance data later.
[0006]
If you try to add crescendo or decrescendo to any part of the automatic performance data with a conventional automatic performance device later, the volume data or note data velocity information existing in the arbitrary part will be reduced to the intended strength. It is necessary to make detailed settings in correspondence. For example, it is necessary to set the volume data finely so that it gradually becomes stronger. Such work is very troublesome work, and the efficiency of editing work is also poor.
[0007]
  As described above, the conventional automatic performance device adds crescendo and decrescendo to an arbitrary portion of automatic performance data later.Since the work was very troublesome, it was difficult to efficiently perform editing desired by the performer.
[0008]
  The present invention is made to eliminate the above-described drawbacks, and any one of velocity information, volume information, and expression information included in an arbitrary part of automatic performance data can be edited with a simple operation. The purpose is to be able to.
[0009]
[Means for Solving the Problems]
  The automatic performance device of the present invention is an automatic performance device having an editing function for adding a crescendo or a decrescendo to a designated edit portion of automatic performance data stored in advance for each part, and adds the crescendo to the edit portion. A predetermined means including at least one of velocity information, volume information and expression information included in the editing portion based on designation information of the designation means and designation means for specifying whether to add a decrescendo An editing means for editing information and a change characteristic until the strength of the sound generated based on the predetermined information included in the editing portion specified by the specifying means reaches a target value to be finally reached Storage means for storing a plurality of patterns of curves, and the designation means includes a plurality of curves stored in the storage means. An arbitrary curve is designated from the curves of the turn, and the editing means is one of velocity information, volume information and expression information included in the editing portion according to the curve designated by the designation means. The predetermined information is edited so as to reach gradually toward.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0011]
The automatic performance device according to the present invention is applied to, for example, an automatic performance device 100 as shown in FIG.
[0012]
  The automatic performance device 100 has an editing function (hereinafter referred to simply as an editing function) for adding a crescendo or a decrescendo to an arbitrary part of automatic performance data later, as shown in FIG. In addition, a CPU (Central Processing Unit) 2, a ROM (Read Only Memory) 3 and a RAM (RAM) connected to a bus line 1 such as a data bus or an address bus.Random (Access Memory) 4 and a sound source circuit 7, and the CPU 2, ROM 3, RAM 4 and sound source circuit 7 are configured to transmit and receive data to and from each other via the bus line 1. Further, an external interface circuit (external I / F) 5 and an operation panel 6 are connected to the CPU 2. Further, an amplifier 8 is connected to the sound source circuit 7, and a speaker 9 is connected to the amplifier 8.
[0013]
First, the CPU 2 controls the operation of the entire apparatus according to various programs stored in the ROM 3. For example, the CPU 2 performs a scan process on the operation panel 6 and executes each process to be described later according to the operation on the operation panel 6.
[0014]
The ROM 3 stores various processing programs for the CPU 2, musical tone waveform data, and the like.
[0015]
The RAM 4 is a memory having an area for temporarily storing various types of information during execution of various types of processing by the CPU 2 and storing information obtained as a result of the various types of processing.
The RAM 4 stores a plurality of pieces of automatic performance data as shown in FIG.
[0016]
The external I / F 5 is composed of, for example, a MIDI interface. The external I / F 5 exchanges information between the automatic performance device 100 and an external device (not shown) in accordance with the MIDI (Musical Instrument Digital Interface) standard that is a connection standard between the automatic performance device and the external device. . Thus, the automatic performance data stored in the RAM 4 can be externally output by the CPU 2 and the automatic performance can be performed by the external device.
[0017]
For example, as shown in FIG. 2, the operation panel 6 is provided with a display 61 that displays contents set by various operators and switches on the operation panel 6. Therefore, the user can perform various operations and information settings while looking at the display 61.
The operation panel 6 also includes a play / stop switch 62 for instructing the start (play) / end (stop) of automatic performance as the above-described various controls and switches, and which music is automatically played or edited. Selection switch 63 for instructing, editing execution switch 64 for instructing execution of editing processing, curve switch 65 for specifying a curve to be described later at the time of editing, and attainment for specifying an attainment rate to be described later at the time of editing A rate switch 66, a part switch 67 for instructing which part to edit, a start bar switch 68 for designating a bar for starting editing, and an end bar switch 69 for designating a bar for ending editing are provided. Yes.
[0018]
The tone generator circuit 7 reads and processes the musical sound waveform data stored in the ROM 3 based on the automatic performance data supplied from the CPU 2, and generates an analog musical sound signal by a digital / analog converter (not shown). This is supplied to the amplifier 8.
Therefore, the musical sound signal generated by the tone generator circuit 7 is amplified by the amplifier 8 and then emitted from the speaker 9.
[0019]
Next, the operation of the automatic performance device 100 performed by the CPU 2 will be described using the flowcharts of FIGS.
[0020]
In the automatic performance device 100, programs according to the flowcharts of FIGS. 3 to 14 are stored in the ROM 3 in advance, and the CPU 2 executes these programs.
[0021]
FIG. 3 shows the main process. When the automatic performance device 100 is turned on, this main process is executed.
[0022]
That is, the CPU 2 performs initialization processing for the entire apparatus (step S301), then panel processing (step S302), automatic performance processing (step S303), and processing for input data from the external I / F 5 (step S304). ) Are sequentially performed, and the process returns to the panel processing in step S302.
[0023]
When performing an automatic performance in the automatic performance process, the CPU 2 creates a timer according to the tempo of the music to be automatically performed, and executes the timer interrupt process as shown in FIG. As a result, the timer clock is incremented at a speed corresponding to the tempo of the song to be automatically played (step S401).
[0024]
FIG. 5 is a flowchart specifically showing the panel process (step S302) shown in the main process of FIG.
[0025]
In this panel process, first, the CPU 2 determines whether or not the play / stop switch 62 on the operation panel 6 has been pressed (step S501).
[0026]
If the play / stop switch 62 is pressed as a result of the determination in step S501, the CPU 2 executes a play / stop process (step S502), and proceeds to the next step S503.
[0027]
As a result of the determination in step S501, when the play / stop switch 62 is not pressed, or after the play / stop process in step S502, the CPU 2 determines whether or not the music selection switch 63 on the operation panel 6 is pressed. (Step S503).
[0028]
If the result of the determination in step S503 is that the music selection switch 63 has been pressed, the CPU 2 executes a music selection process (step S504) and proceeds to the next step S505.
[0029]
If the result of the determination in step S503 is that the music selection switch 63 has not been pressed, or after the music selection processing in step S504, the CPU 2 determines whether or not the edit execution switch 64 on the operation panel 6 has been pressed (step S505). ).
[0030]
If the result of determination in step S505 is that the edit execution switch 64 has been pressed, the CPU 2 executes edit processing (step S506) and proceeds to the next step S507.
[0031]
As a result of the determination in step S505, if the edit execution switch 64 has not been pressed, or after the editing process in step S506, the CPU 2 determines whether or not the curve switch 65 on the operation panel 6 has been pressed (step S507). ).
[0032]
If the result of determination in step S507 is that the curve switch 65 has been pressed, the CPU 2 executes curve change processing (step S508) and proceeds to the next step S509.
[0033]
As a result of the determination in step S507, if the curve switch 65 has not been pressed, or after the curve change process in step S508, the CPU 2 determines whether or not the arrival rate switch 66 on the operation panel 6 has been pressed (step S509).
[0034]
As a result of the determination in step S509, if the arrival rate switch 66 is pressed, the CPU 2 executes an arrival rate change process (step S510), and proceeds to the next step S511.
[0035]
As a result of the determination in step S509, if the arrival rate switch 66 has not been pressed, or after the arrival rate change processing in step S510, the CPU 2 determines whether or not the part switch 67 on the operation panel 6 has been pressed ( Step S511).
[0036]
If the result of determination in step S511 is that the part switch 67 has been pressed, the CPU 2 executes editing target part change processing (step S512) and proceeds to the next step S513.
[0037]
As a result of the determination in step S511, if the part switch 67 has not been pressed, or after the editing target part change process in step S512, the CPU 2 determines whether or not the start bar switch 68 on the operation panel 6 has been pressed. (Step S513).
[0038]
If the result of determination in step S513 is that the start bar switch 68 has been pressed, the CPU 2 executes start bar change processing (step S514), and proceeds to the next step S515.
[0039]
As a result of the determination in step S513, if the start bar switch 68 has not been pressed, or after the start bar change processing in step S514, the CPU 2 determines whether or not the end bar switch 69 on the operation panel 6 has been pressed. (Step S515).
[0040]
If the end measure switch 69 has been pressed as a result of the determination in step S515, the CPU 2 executes end measure change processing (step S516) and returns to the main processing in FIG.
[0041]
If the end measure switch 69 has not been pressed as a result of the determination in step S515, the CPU 2 returns directly to the main process in FIG.
[0042]
As described above, in the panel process, each switch state on the operation panel 6 is detected, and various processes are performed based on the state.
[0043]
FIG. 6 is a flowchart specifically showing the play / stop process (step S502) shown in the panel process of FIG.
[0044]
Here, in the automatic performance device 100, for example, a play flag indicating whether or not the device is performing an automatic performance is provided. This play flag is “1” when the device is performing an automatic performance. Is set to “0” when the automatic performance is not being executed.
[0045]
Therefore, in the play / stop process, first, the CPU 2 determines whether or not the apparatus is performing an automatic performance based on the play flag (step S601).
[0046]
If the result of the determination in step S601 is that the apparatus is performing an automatic performance, the CPU 2 clears the play flag to “0” (step S604), and terminates the automatic performance (a process for erasing the musical sound). This is performed (step S605).
[0047]
If the result of determination in step S601 is that the apparatus is not executing automatic performance, the CPU 2 sets the play flag to “1” (step S602).
And CPU2 performs the process which starts an automatic performance (step S603). Specifically, the top pointer of the automatic performance data corresponding to the music number obtained by the music selection processing described later is set for each part, and the automatic performance processing (step S303) shown in FIG. 3 is executed.
[0048]
After the automatic performance end process (step S605) or the automatic performance start process (step S603) as described above, the CPU 2 returns to the panel process of FIG.
[0049]
FIG. 7 is a flowchart specifically showing the music selection process (step S504) shown in the panel process of FIG.
[0050]
Here, in the automatic performance device 100, as described above, automatic performance data for a plurality of songs is stored in the RAM 4, and which of these songs is automatically played, or which song's automatic performance data. Can be selected by pressing a music selection switch 63. Each time the music selection switch 63 is pressed, the music number is incremented, and the music number at this time is displayed on the display 61. Therefore, the user can select a desired song by operating the song selection switch 63 while confirming the song number on the screen of the display 61.
[0051]
Therefore, in this music selection process, first, the CPU 2 determines whether or not the apparatus is performing an automatic performance based on the above-described play flag (step S701).
[0052]
If the result of determination in step S601 is that the apparatus is performing automatic performance, the CPU 2 returns directly to the panel processing of FIG.
[0053]
If the result of determination in step S601 is that the apparatus is not executing automatic performance, the CPU 2 updates the song number stored in the internal memory to the number of the next song (step S702), and returns to the panel processing in FIG. To do.
[0054]
FIG. 8 is a flowchart specifically showing the edit target part changing process (step S512) shown in the panel process of FIG.
[0055]
In this automatic performance device 100, automatic performance data can be edited for each part, and which part is to be edited can be selected by pressing a part switch 67. For example, as a result of the music selection process (step S504) performed by the operation of the music selection switch 63, when the music number to be edited is obtained, the part switch 67 is then operated to correspond to the music number to be edited. It is possible to specify which part of the automatic performance data to edit the automatic performance data. That is, each time the part switch 67 is pressed, the part to be edited sequentially changes to part 1, part 2,..., And information on which part is currently being edited is displayed on the display 61. Is displayed. Therefore, the user can select a desired part by operating the part switch 67 while confirming on the screen of the display device 61.
[0056]
Therefore, in this editing target part changing process, first, the CPU 2 determines whether or not the apparatus is performing an automatic performance based on the above-described play flag (step S801).
[0057]
If the result of determination in step S801 is that the apparatus is performing automatic performance, the CPU 2 returns directly to the panel processing of FIG.
[0058]
If the result of determination in step S801 is that the apparatus is not executing automatic performance, the CPU 2 updates the information indicating the part to be edited stored in the internal memory to information indicating the next part (step S802), and the above FIG. Return to panel processing.
[0059]
FIG. 9 is a flowchart specifically showing the start bar changing process (step S514) shown in the panel process of FIG.
[0060]
Here, in this automatic performance device 100, the music selection switch 63 and the part switch 67 are sequentially operated, and the music selection process (step S504) and the edit target part change process (step S512) are executed as a result. After the song is determined and which part of the song is to be edited is determined, the start measure switch 68 is pressed to specify the measure to start editing in the automatic performance data to be edited. That is, each time the start bar switch 68 is pressed, the bar number sequentially changes to 1, 2,..., And the current bar number is displayed on the display 61. Therefore, the user can designate the bar where the thinning editing is to be started by operating the start bar switch 68 while confirming on the screen of the display 61.
[0061]
Therefore, in this starting bar changing process, first, the CPU 2 determines whether or not the apparatus is performing an automatic performance based on the above-described play flag (step S901).
[0062]
If the result of determination in step S901 is that the apparatus is performing automatic performance, the CPU 2 returns directly to the panel processing of FIG.
[0063]
If the result of determination in step S901 is that the apparatus is not executing automatic performance, the CPU 2 updates the information indicating the starting bar number stored in the internal memory to the next bar number (step S902), and the above-mentioned FIG. Return to panel processing.
[0064]
FIG. 10 is a flowchart specifically showing the end measure changing process (step S516) shown in the panel process of FIG.
[0065]
Here, in the automatic performance device 100, as described above, after the measure to start editing is determined by the start measure switch 68, the end measure switch 69 is pressed so that the measure to end editing can be designated. Has been made. That is, each time the end measure switch 69 is pressed, the measure numbers are sequentially changed to 1, 2,..., And the current measure number is displayed on the display 61. Therefore, the user can designate the bar for which editing is to be ended by operating the end bar switch 69 while confirming on the screen of the display 61. Accordingly, for example, as shown in FIG. 19, it is possible to specify that editing is performed by adding crescendo or decrescendo to 2 bars n2 to 4 bars n4 with respect to automatic performance data Part 2 of part 2 of a song. .
[0066]
Therefore, in this end measure changing process, first, the CPU 2 determines whether or not the apparatus is performing an automatic performance based on the above-described play flag (step S1001).
[0067]
If the result of determination in step S1001 is that the apparatus is performing automatic performance, the CPU 2 returns directly to the panel processing of FIG.
[0068]
If the result of the determination in step S1001 is that the apparatus is not executing automatic performance, the CPU 2 updates the information indicating the end measure number stored in the internal memory to the next measure number (step S1002), and the above-mentioned FIG. Return to panel processing.
[0069]
In the above-described start bar change process (step S514) and end bar change process (step S516), the "start bar number" and the "end bar number" are not reversed. For example, the relationship of “start bar number ≦ end bar number” is always established, and when the start bar number and end bar number are set to the same value, only the bar with that value is edited. To do.
[0070]
FIG. 11 is a flowchart specifically showing the arrival rate changing process (step S510) shown in the panel process of FIG.
[0071]
Here, in the automatic performance device 100, the music selection switch 63, the part switch 67, the start bar switch 68, and the end bar switch 69 are sequentially operated as described above to perform the music selection process (step S504) described above and the editing target. As a result of the sequential execution of the part change process (step S512), the start measure change process (step S514), and the end measure change process (step S516), the song to be edited is determined, and which part of the song is to be edited is determined. Further, after determining which bar of the automatic performance data of the part is to be edited, by pressing the arrival rate switch 66, the strength of the sound in the bar to be edited can be designated.
[0072]
“Achievement rate” here refers to, for example, 200% is the strongest and 0% is the weakest on the basis of 100%, and indicates which percentage value is gradually strengthened or weakened toward the target. And The “arrival rate” can be specified in increments of 10%.
Therefore, if you want to add decrescendo to the bar to be edited, set the arrival rate within the range of “10% to 90%”, and if you want to add crescendo, set the arrival rate to “110% to 200%”. When the sound intensity is not changed (when not changed), the arrival rate may be set to “100%”.
[0073]
FIG. 15 shows changes in sound intensity when the arrival rate is set to “150%” and “10%” in the case of editing 2 bars n2 to 4 bars n4 shown in FIG. It is shown.
When the arrival rate is set to “150%”, as indicated by the straight line A in FIG. 15, the sound gradually increases with the target of 150% and the arrival rate is set to “10%”. As shown by the straight line B in FIG. 15, the sound is gradually weakened with a target of 10%.
[0074]
In FIG. 15, for the sake of simplicity of explanation, the change in sound intensity is indicated by straight lines A and B. The straight lines A and B indicating such a change in sound intensity will be described later.
[0075]
It is the arrival rate switch 66 that sets the “arrival rate” as described above, and every time this arrival rate switch 66 is pressed, the “arrival rate” is incremented by 10% to 10, 20,. It changes sequentially, and the current arrival rate is displayed on the screen of the display 61. Therefore, the user can designate a desired arrival rate by operating the arrival rate switch 66 while checking on the screen of the display device 61.
[0076]
Therefore, in this arrival rate changing process, first, the CPU 2 determines whether or not the apparatus is performing an automatic performance based on the above-described play flag (step S1101).
[0077]
If the result of determination in step S1101 is that the apparatus is performing automatic performance, the CPU 2 returns directly to the panel processing of FIG.
[0078]
If the result of determination in step S1101 is that the apparatus is not executing automatic performance, the CPU 2 updates the arrival rate stored in the internal memory (step S1102), and returns to the panel processing of FIG.
[0079]
FIG. 12 is a flowchart specifically showing the curve changing process (step S508) shown in the panel process of FIG.
[0080]
Here, in the automatic performance device 100, when the arrival rate is determined in the above-described arrival rate changing process (step S510), the change in sound intensity until reaching the determined arrival rate, that is, the straight line in FIG. The change indicated by A or B can be designated.
[0081]
For example, the ROM 3 stores changes as described above in advance as curves 1 to 3 as shown in FIGS. 16A to 16C, and these curves 1 to 3 can be designated by the curve switch 65. It is made like that.
[0082]
That is, each time the curve switch 65 is pressed, the curve number sequentially changes to 1, 2, and 3, and the current curve number is displayed on the display 61. Therefore, the user can designate a desired curve by operating the curve switch 65 while confirming on the screen of the display device 61.
[0083]
Therefore, in this curve change process, first, the CPU 2 determines whether or not the apparatus is performing an automatic performance based on the above-described play flag (step S1201).
[0084]
If the result of determination in step S1201 is that the apparatus is performing automatic performance, the CPU 2 returns directly to the panel processing of FIG.
[0085]
If the result of determination in step S1201 is that the apparatus is not executing automatic performance, the CPU 2 updates the curve number stored in the internal memory (step S1202), and returns to the panel processing in FIG.
[0086]
FIG. 13 is a flowchart specifically showing the editing process (step S506) shown in the panel process of FIG.
[0087]
Here, in the automatic performance device 100, the music selection switch 63, the part switch 67, the start bar switch 68, the end bar switch 69, the arrival rate switch 66, and the curve switch 65 are sequentially operated to perform the music selection process described above (step S504). The editing target part changing process (step S511), the starting bar changing process (step S514), the ending bar changing process (step S516), the arrival rate changing process (step S510), and the curve changing process (step S508) are sequentially executed. Thereafter, when the edit execution switch 64 is pressed, this editing process is executed.
Therefore, at this time, information on the song number, part, start bar, end bar, arrival rate, curve number to be edited is stored in the internal memory of the CPU 2.
[0088]
For the sake of simplicity, for example, as shown in FIG. 19, editing is performed by adding crescendo or decrescendo to 2 bars n2 to 4 bars n4 of the automatic performance data Part 2 of part 2 of a song. The following description will be given assuming that
Here, the data to be edited is, for example, velocity information included in the note data.
[0089]
Therefore, in this editing process, first, the CPU 2 determines whether or not the apparatus is performing an automatic performance based on the above-described play flag (step S1301).
[0090]
If the result of determination in step S1301 is that the apparatus is performing automatic performance, the CPU 2 returns directly to the panel processing of FIG.
[0091]
If the result of the determination in step S1301 is that the apparatus is not executing an automatic performance, the CPU 2 first uses the various information stored in the internal memory as described above to use the two measures n2 of the automatic performance data Part 2 of part 2. Is set as the read start position (read pointer) (step S1302).
[0092]
Next, the CPU 2 obtains the difference between the start bar and the end bar, and determines the step rate of the target curve based on this difference (step S1303).
For example, even in the same curve 1, the number of bars to be edited is 4 bars (n2 to n5) as shown in FIG. 17A, or 7 bars (n2 to n8) as shown in FIG. This is because if the number of measures to be edited is different, the step rate is also different.
[0093]
Next, the CPU 2 reads data from the read pointer set in step S1302 (step S1304).
[0094]
Next, the CPU 2 determines whether or not the data read in step S1304 is note data (step S1305).
[0095]
If the result of determination in step S1305 is that it is not musical note data, the CPU 2 proceeds to step S1311 described later.
[0096]
If the result of determination in step S1305 is note data, the CPU 2 reads the value a (φ˜1) from the target curve based on the position from the starting bar and the step rate determined in step S1303 (step S1306).
For example, as shown in FIG. 18, when the data located at PR in the edit target measure is read in step S1304, the position of the data in the target data (curve 1) is read as a value a.
That is, the value a is a value indicating where the data read in step S1304 is located on the target curve.
[0097]
Next, the CPU 2 calculates the determined arrival rate (%)
b = (arrival rate−100) / 100
Is converted into a decimal value b (step S1307).
[0098]
Next, the CPU 2 has the ratio value c of how much the velocity value is actually increased or decreased with the value “a” obtained in step S1306 and the value “b” obtained in step S1307.
c = a × b
(Step S1308).
[0099]
Next, the CPU 2 uses the value “c” obtained in step S1308 as the ratio d to the current velocity value,
d = 1 + c
(S1309).
[0100]
Next, the CPU 2 multiplies the current velocity value by the value “d” obtained in step S1309, and writes the multiplication result as the edited velocity value in the current read pointer (step S1310).
[0101]
Then, the CPU 2 updates the read pointer to the next pointer (step S1311).
[0102]
Next, the CPU 2 determines whether or not the read pointer updated in step S1311 has become the final pointer PE of the fourth measure n4 which is the last measure (step S1312).
[0103]
If the result of determination in step S1312 is the final pointer PE, the CPU 2 returns to the panel processing of FIG. 5, and if it is not yet the final pointer PE, the CPU 2 returns to step S1304.
[0104]
As described above, the velocity information included in the note data of 2 bars n2 to 4 bars n4 is edited, and crescendo or decrescendo is added to 2 bars n2 to 4 bars n4 with an arbitrary curve. .
[0105]
FIG. 14 is a flowchart specifically showing the automatic performance process (step S303) shown in the panel process of FIG.
[0106]
This automatic performance process is a process performed for each part, and only the automatic performance process for the automatic performance data of one part will be described for the sake of simplicity.
[0107]
Here, in the automatic performance device 100, when the music to be automatically played is selected by the music selection switch 63 when the automatic performance is not being executed, and the play / stop switch 62 is pressed, the music selection processing (step S504) and play described above are performed. / Stop processing (step S502) is executed, and then this automatic performance processing is executed. At this time, the timer interrupt process shown in FIG. 4 is also executed. Therefore, at this time, the above-mentioned play flag is set to “1”, and the first pointer (read pointer) of the automatic performance data corresponding to the music number to be automatically played is set for each part. In addition, the timer clock is incremented at a speed corresponding to the tempo of the music to be automatically played.
[0108]
That is, first, the CPU 2 determines whether or not the apparatus is performing automatic performance based on the play flag (step S1401).
[0109]
If the result of determination in step S1401 is that the apparatus is performing automatic performance, the CPU 2 returns directly to the main process in FIG.
[0110]
If the result of determination in step S1401 is that the apparatus is not executing automatic performance, the CPU 2 reads automatic performance data from the read pointer set as described above (step S1402).
[0111]
Next, the CPU 2 determines whether or not the time information included in the data read in step S1402 matches the timer clock generated in the timer interrupt process shown in FIG. 4 (step S1403).
The time information is information including performance start time and the like, and is included in each data in the automatic performance data. Therefore, it is possible to determine whether or not the read data is to be played by comparing the time information of the read data with the timer clock generated by the timer interrupt process.
[0112]
If it is determined in step S1403 that the time information of the read data matches the timer clock, the CPU 2 performs a performance process on the data (step S1404). Thereby, a musical sound based on the data is emitted from the speaker 9.
Then, the CPU 2 updates the read pointer to a pointer indicating the read position of the next data (step S1405), and returns to the process of step S1402.
[0113]
If it is determined in step S1403 that the time information of the read data does not match the timer clock, the CPU 2 returns to the main process in FIG. 3 as it is.
[0114]
As described above, the automatic performance device 100 is configured to perform editing by adding crescendo or decrescendo to any part of the automatic performance data later without performing a complicated operation. High editing can be performed efficiently.
Further, when adding a crescendo or decrescendo, a curve is added, and the curve can be arbitrarily selected, so that editing can be performed with a higher degree of freedom.
[0115]
In the above-described automatic performance device 100, the data to be edited is the velocity information.
[0116]
Further, the curves 1 to 3 as shown in FIGS. 16A to 16C are prepared in advance, but the user may arbitrarily create the curves.
[0117]
【The invention's effect】
  As described above, according to the present invention, the velocity information, volume information, or expression information included in the editing portion can be obtained as desired by simply selecting a desired curve from among a plurality of stored curves. Can be edited. As a result, it is possible to edit the sound in the editing portion so that the sound gradually increases or decreases gradually according to the specified curve, and has various changes. The crescendo or decrescendo can be added by a simple operation, and editing with a high degree of freedom can be performed efficiently.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of an automatic performance apparatus to which an automatic performance apparatus according to the present invention is applied.
FIG. 2 is a diagram for explaining an operation panel of the automatic performance device.
FIG. 3 is a flowchart showing main processing executed by the CPU of the automatic performance device.
FIG. 4 is a flowchart showing a timer interrupt process executed during automatic performance.
FIG. 5 is a flowchart showing panel processing of the main processing.
FIG. 6 is a flowchart showing play / stop processing of the panel processing.
FIG. 7 is a flowchart showing a music selection process of the panel process.
FIG. 8 is a flowchart showing editing target part change processing of the panel processing.
FIG. 9 is a flowchart showing a start bar change process of the panel process.
FIG. 10 is a flowchart showing an end measure change process of the panel process.
FIG. 11 is a flowchart showing an arrival rate change process of the panel process.
FIG. 12 is a flowchart showing a curve change process of the panel process.
FIG. 13 is a flowchart showing editing processing of the panel processing.
FIG. 14 is a flowchart showing an automatic performance process of the main process.
FIG. 15 is a diagram for explaining an “arrival rate”;
FIG. 16 is a diagram for explaining a curve to be set.
FIG. 17 is a diagram for explaining processing for obtaining a step rate of a curve.
FIG. 18 is a diagram for explaining a process for obtaining the position of the target data on the curve.
FIG. 19 is a diagram for explaining an example of a configuration of automatic performance data of a certain song.
[Explanation of symbols]
1 Bus line
2 CPU
3 ROM
4 RAM
5 External I / F
6 Operation panel
7 Sound source circuit
8 Amplifier
9 Speaker
100 Automatic performance device

Claims (1)

An automatic performance device having an editing function for adding a crescendo or decrescendo to a specified editing portion of automatic performance data stored in advance for each part,
A designation means for designating whether to add a crescendo or a decrescendo to the editing part;
Editing means for editing predetermined information including at least any one of velocity information, volume information and expression information included in the editing portion based on the designation information of the designation means;
Storage means for storing a plurality of patterns of curves indicating change characteristics until the strength of the sound produced based on the predetermined information included in the editing portion specified by the specifying means reaches the target value to be finally reached And
The designation means designates an arbitrary curve from among a plurality of patterns of curves stored in the storage means, and the editing means includes velocity information, volume included in the edit portion according to the curve designated by the designation means, and volume An automatic performance apparatus, wherein the predetermined information is edited so that any one of information and expression information gradually reaches the target value.

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